一、引言对彩色照片的彩色还原质量的评定是复杂的,因为:第一,把照片和原景物在“相同的条件”下对比几乎是不可能的。人们判断照片上兰天、白云、绿草、红花的颜色是否真实,在绝大多数情况下是凭借大脑对这些常见景物的颜色的记忆。第二,景物是立体的(三维的),而照片却是平面的(二维的);我们观察照片时总是靠经验 I. INTRODUCTION The evaluation of the color reproduction quality of color photographs is complicated because: First, it is almost impossible to compare the photograph with the original scene under the “same conditions”. People judge whether the colors of blue sky, white clouds, green grass, and safflower are true in their photos, and in most cases rely on the brain’s memory of the colors of these common scenery. Second, the scene is three-dimensional (three-dimensional), while the photo is flat (two-dimensional); we always rely on experience